com.couchbase.client.java.transcoder.subdoc

Class AbstractFragmentTranscoder

java.lang.Object

com.couchbase.client.java.transcoder.subdoc.AbstractFragmentTranscoder

All Implemented Interfaces:

FragmentTranscoder

Direct Known Subclasses:

AbstractByteArrayFragmentTranscoder

@InterfaceStability.Committed
 @InterfaceAudience.Public
public abstract class AbstractFragmentTranscoder
extends Object
implements FragmentTranscoder

A common implementation base of the FragmentTranscoder interface for transcoding sub-document fragments. It recognizes MultiValue as a special encoding case to be treated separately.

Since:

2.2

Author:

Simon Baslé

Constructor Summary

Constructors

Constructor and Description
AbstractFragmentTranscoder()

Method Summary

Modifier and Type	Method and Description
<T> T	decode(com.couchbase.client.deps.io.netty.buffer.ByteBuf encoded, Class<? extends T> clazz) Decode content in a ByteBuf **without releasing it**.
protected abstract com.couchbase.client.deps.io.netty.buffer.ByteBuf	doEncodeMulti(MultiValue<?> multiValue, String transcodingErrorMessage) Encode a special mutation value that denotes multiple values being processed in bulk, to a ByteBuf suitable for use in the sub-document protocol.
protected abstract <T> com.couchbase.client.deps.io.netty.buffer.ByteBuf	doEncodeSingle(T value, String transcodingErrorMessage) Encode a single mutation value to a ByteBuf suitable for use in the sub-document protocol.
<T> com.couchbase.client.deps.io.netty.buffer.ByteBuf	encode(T value) Encode a value to a ByteBuf suitable for use in the sub-document protocol.
<T> com.couchbase.client.deps.io.netty.buffer.ByteBuf	encodeWithMessage(T value, String transcodingErrorMessage) Encode a value to a ByteBuf suitable for use in the sub-document protocol.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface com.couchbase.client.java.transcoder.subdoc.FragmentTranscoder

decodeWithMessage

Constructor Detail

AbstractFragmentTranscoder

public AbstractFragmentTranscoder()

Method Detail

decode

public <T> T decode(com.couchbase.client.deps.io.netty.buffer.ByteBuf encoded,
                    Class<? extends T> clazz)
             throws TranscodingException

Description copied from interface: FragmentTranscoder

Decode content in a ByteBuf **without releasing it**. Suitable for populating a DocumentFragment's content.

Specified by:

decode in interface FragmentTranscoder

Type Parameters:

T - the type of the decoded fragment.

Parameters:

encoded - the encoded fragment value (will not be released).

clazz - the target class for decoded value. Using Object.class implies a generic decode, where dictionaries are represented by JsonObject and arrays by JsonArray.

Returns:

a decoded fragment.

Throws:

TranscodingException - if the decoding couldn't happen.

encode

public <T> com.couchbase.client.deps.io.netty.buffer.ByteBuf encode(T value)
                                                             throws TranscodingException

Description copied from interface: FragmentTranscoder

Encode a value to a ByteBuf suitable for use in the sub-document protocol.

Specified by:

encode in interface FragmentTranscoder

Type Parameters:

T - the type of the fragment being encoded.

Parameters:

value - the value to encode.

Returns:

a ByteBuf representation of the fragment value.

Throws:

TranscodingException - if the encoding couldn't happen.

encodeWithMessage

public <T> com.couchbase.client.deps.io.netty.buffer.ByteBuf encodeWithMessage(T value,
                                                                               String transcodingErrorMessage)
                                                                        throws TranscodingException

Description copied from interface: FragmentTranscoder

Encode a value to a ByteBuf suitable for use in the sub-document protocol.

Specified by:

encodeWithMessage in interface FragmentTranscoder

Type Parameters:

T - the type of the fragment being encoded.

Parameters:

value - the value to encode.

transcodingErrorMessage - the error message to be used in the thrown TranscodingException if the encoding couldn't happen.

Returns:

a ByteBuf representation of the fragment value.

Throws:

TranscodingException - if the encoding couldn't happen.

doEncodeSingle

protected abstract <T> com.couchbase.client.deps.io.netty.buffer.ByteBuf doEncodeSingle(T value,
                                                                                        String transcodingErrorMessage)
                                                                                 throws TranscodingException

Encode a single mutation value to a ByteBuf suitable for use in the sub-document protocol.

Type Parameters:

T - the type of the fragment being encoded.

Parameters:

value - the value to encode.

transcodingErrorMessage - the error message to be used in the thrown TranscodingException if the encoding couldn't happen.

Returns:

a ByteBuf representation of the fragment value.

Throws:

TranscodingException - if the encoding couldn't happen.

doEncodeMulti

protected abstract com.couchbase.client.deps.io.netty.buffer.ByteBuf doEncodeMulti(MultiValue<?> multiValue,
                                                                                   String transcodingErrorMessage)
                                                                            throws TranscodingException

Encode a special mutation value that denotes multiple values being processed in bulk, to a ByteBuf suitable for use in the sub-document protocol.

Parameters:

multiValue - the multivalue to encode.

transcodingErrorMessage - the error message to be used in the thrown TranscodingException if the encoding couldn't happen.

Returns:

a ByteBuf representation of the fragment multivalue.

Throws:

TranscodingException - if the encoding couldn't happen.